Feature/bitcoin utils #18

Job	Run time
clippy	2m 6s
cargo-fmt	10s
cargo-doc	53s
build (ubuntu-latest, stable)	39s
build-wasm (ubuntu-latest, stable)	36s
build (ubuntu-latest, nightly)	52s
build-wasm (ubuntu-latest, nightly)	50s
build (macos-latest, stable)	1m 41s
build-wasm (macos-latest, stable)	56s
build (macos-latest, nightly)	1m 0s
build-wasm (macos-latest, nightly)	53s
unit-tests (ubuntu-latest, stable)	2m 55s
integration-tests (ubuntu-latest, stable)	3m 33s
unit-tests (ubuntu-latest, nightly)	3m 11s
integration-tests (ubuntu-latest, nightly)	3m 45s
unit-tests (macos-latest, stable)	3m 13s
unit-tests (macos-latest, nightly)	2m 52s
	30m 5s

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